Quenching of hadron spectra in media

Details Quenching of hadron spectra in media Quenching of hadron spectra in media

2001-06-29

arxiv.org/abs/hep-ph/0106347v1

JHEP 0109 (2001) 033

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pp, 5 eps figures

Scientific paper

10.1088/1126-6708/2001/09/033

We determine how the yield of large transverse momentum hadrons is modified due to induced gluon radiation off a hard parton traversing a QCD medium. The quenching factor is formally a collinear- and infrared-safe quantity and can be treated perturbatively. In spite of that, in the $p_\perp$ region of practical interest, its value turns out to be extremely sensitive to large distances and can be used to unravel the properties of dense quark-gluon final states produced in heavy ion collisions. We also find that the standard modelling of quenching by shifting $p_\perp$ in the hard parton cross section by the mean energy loss is inadequate.

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